As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6423 - IAD-ROC - DURING TAXI, EXPERIENCED A LT STALL SYSTEM THAT WOULD NOT TEST ON THE GROUND. A/C RETURNED TO THE GATE WHERE THE MX TECHS FOUND THE LT LIFT TRANSDUCER TO BE INOPERATIVE. REPLACED AND TESTED THE LT LIFT TRANSDUCER IAW MX PROCEDURES. A/C WAS THEN RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)